import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 86186
 * Date: 2023-10-06
 * Time: 11:49
 */
public class Test {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        Callable<Integer> callable = new Callable<Integer>() {
            @Override
            public Integer call() throws Exception {
                int ret = 0;
                for (int i = 1; i <= 1000; i++) {
                    ret += i;
                }
                return ret;
            }
        };

        FutureTask<Integer> task = new FutureTask<>(callable);
        Thread t = new Thread(task);
        t.start();
        System.out.println(task.get());
    }
}
